ZIP Codes of San Augustine County, TX

Population & People
Population & People
Total Population
7,206
Household Income
Household Income
Median Income
$56,875
Housing
Housing
Total Housing Units
4,376
Business & Economy
Business & Economy
Total Businesses
139
Employment
Employment
Employment Rate
47.10%
Education
Education
Bachelor's Degree+
13.59%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 2 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:2 ZIP Codes (2 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:936
Timezone:Central (GMT -06:00)
Local Time:11:55:21 PM
Population:7,206 [See All]
FIPS:48405
Land Area:515 sq mi
Water Area:49 sq mi
Coordinates:31.3580, -94.1507
Quick Link:
https://www.zip-codes.com/county/tx-san-augustine.asp
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Notable population decline
Lost 10.3% of residents since 2014.
Among America's 50 most Hispanic-majority counties
0.7% Hispanic or Latino — #14 nationwide.

Standout ZIPs in this County


Most Populous
San Augustine · 5,708 people
79.2% of county total
Highest Income
Broaddus · $69,554 median
1.2× county average
Largest Land Area
San Augustine · 357.6 sq mi
Spans the most ground
Fastest Growth
San Augustine · -8.4% (10-yr)
6,230 → 5,708 residents
Most Educated
Broaddus · 15.2% bachelor's+
172 of 1,134 adults 25+

Things worth knowing about San Augustine County


7,206 residents live across 2 ZIPs covering 515 sq mi, served by 2 distinct USPS-recognized cities.

Population moved from 8,033 to 7,206 from 2014 to 2024 — a -10.3% change. 0 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 75929 (Broaddus, $69,554 median) and poorest ZIP 75972 (San Augustine, $44,196) are 16.9 miles apart — a 1.6× income gap across local geography.

Median home values vary 1.7× across this county — from $96,300 in 75972 (San Augustine) to $166,900 in 75929 (Broaddus).

Density varies across the county — from 9 people/sq mi in 75929 (Broaddus) to 16 in 75972 (San Augustine).

Educational attainment ranges from 13.2% bachelor's+ in 75972 (San Augustine) to 15.2% in 75929 (Broaddus) — the breadth of educational profiles across the area.

Within Texas, this is the #183 most populous of 254 counties and ranks #203 for median household income .

Weighted by population, the typical household earns about $49,467 across the county — reflecting what a typical resident sees, not a simple ZIP average.

13.6% of adults age 25+ hold a bachelor's degree or higher (718 of 5,284 reporting).

2 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about San Augustine County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
515
square miles
Avg density
14.0
people per sq mi
Population
7,206
across 2 ZIPs
San Augustine
357.6 sq mi
5,708 residents
Broaddus
157.9 sq mi
1,498 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

San Augustine

Population decline

San Augustine County lost 10.3% of residents between 2014 and 2024. ZIPs that shed the largest share:

Broaddus
-16.9%
1,803 → 1,498 residents

All ZIP Codes in San Augustine County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
75972San AugustineStandard5,708$44,196357.6-8.4%
75929BroaddusStandard1,498$69,554157.9-16.9%

Adjacent & Nearby Counties